There are 0 pins on this high power RF circuit board.The Evaluation board type is Attenuator.Try searching with HMC273 to find RF Board variants.The mount is attached to PCB.
103393-HMC273MS10G Features
0 pins Attenuator Type
103393-HMC273MS10G Applications
There are a lot of Analog Devices Inc. 103393-HMC273MS10G RF Boards applications.